Diagnosis. A species of the genus Trimeresurus, endemic to islands off the west coast of Sumatra Island, characterized by the combination of the following characters: (1) in both sexes, an overall brown coloration, with 25–30 darker crossbands, made of a dark background colour in various shades of dark greyish-brown, with short, irregular, elongated darker dorsolateral blotches, lighter in their centre and darker on their edges, with below a smaller subrectangular or subtriangular dark greyish-brown blotche of same colour; between the blotches, the background colour is heavily spotted with dark dots; a row of large, subrectangular blotches on the ventral tips and 1st–2nd DSR, with cream blotches in between; (2) a distinctly projected and raised snout, strongly obliquely truncated when seen from the side, subrectangular seen from above; (3) internasals projected, strongly spatulate and bilobate, laterally expanded; (4) 19 or 21 MSR, distinctly keeled; (5) 1st supralabial distinct from nasal; (6) 2nd supralabials bordering the whole of the anterior margin of the loreal pit; (7) 4 or 5 narrow supraoculars, strongly erect and divergent; (8) a low number of VEN: 148–149 in males and 129–142 in females; (9) occipital and temporal scales strongly keeled; (10) IL of the first pair not in contact each with the other; and (11) hemipenes short, massive and spiny [from DAVID et al. 2006].

TEYNIÉ, ALEXANDRE; PATRICK DAVID, & ANNEMARIE OHLER 2010. Note on a collection of Amphibians and Reptiles from Western Sumatra (Indonesia), with the description of a new species of the genus Bufo. Zootaxa 2416: 1–43 - get paper here